Load Analyzer - ABB ACQ580 Firmware Manual

206 Parameters
No. Name/Value
35.55 Motor thermal time
constant
100...10000 s
36

36 Load analyzer

36.01 PVL signal source
Not selected
Motor speed used
Reserved
Output frequency
Motor current
Reserved
Motor torque
Description
Defines the thermal time constant for use with the motor
thermal protection model, defined as the time to reach 63% of
the nominal motor temperature. See the motor
manufacturer's recommendations.
For thermal protection according to UL requirements for
NEMA class motors, use the rule of thumb: Motor thermal
time equals 35 times t6, where t6 (in seconds) is specified by
the motor manufacturer as the time that the motor can safely
operate at six time its rated current.
The thermal time for Class 10 trip curve is 350 s, for Class 20
trip curve 700 s and for Class 30 trip curve 1050 s.
Motor current
100%
Temperature rise
100%
63%
Motor thermal time
Motor thermal time constant.
Peak value and amplitude logger settings.
See also section Load analyzer
Selects the signal to be monitored by the peak value logger.
The signal is filtered using the filtering time specified by
parameter 36.02 PVL filter
The peak value is stored, along with other pre-selected
signals at the time, into parameters 36.10...36.15.
The peak value logger can be reset using parameter
Reset loggers. The logger is also reset whenever the signal
source is changed. The date and time of the last reset are
stored into parameters
None (peak value logger disabled).
01.01 Motor speed used
01.06 Output frequency
01.07 Motor current (page 103).
01.10 Motor torque (page 103).
(page 93).
time.
36.16 and 36.17 respectively.
(page 103).
(page 103).
Def/FbEq16
256 s
Time
Time
1 = 1 s
Output power
36.09
0
1
2
3
4
5
6